Re: pgsql: Remove useless default clause in switch
От | David Rowley |
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Тема | Re: pgsql: Remove useless default clause in switch |
Дата | |
Msg-id | CAKJS1f9xM4dwZDaTEwcFgOsGx-fOkOoD-7xgNxCxGC5dyN9u=g@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: pgsql: Remove useless default clause in switch (Alvaro Herrera <alvherre@alvh.no-ip.org>) |
Список | pgsql-committers |
On 24 April 2018 at 13:50, Alvaro Herrera <alvherre@alvh.no-ip.org> wrote: > David Rowley wrote: >> On 24 April 2018 at 03:12, Alvaro Herrera <alvherre@alvh.no-ip.org> wrote: >> > Remove useless default clause in switch >> > >> > The switch covers all values of the enum driver variable, so having a >> > default: clause is useless, even if it's only to do Assert(false). >> >> Just for my own understanding: >> >> I always thought that when all options were covered that we generally >> kept a default just in case someone added another enum and forgot to >> update the code. > > The compiler will emit a warning when it sees that not all cases are > handled, so it's not necessary to have a default case. Thank you all for explaining that. It very much makes sense now. -- David Rowley http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
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